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external components

Class 1 AC Watt hour meters

sames

sames

Single Phase Uni-directional Power / Energy

Metering IC with Instantaneous Pulse Output

SA2002E

1/10

SA2002E (REV. 5)

17-08-00

DESCRIPTION

The SAMES SA2002E is an enhancement of the SA9602E, as

the circuit contains the oscillator on chip.

The SAMES SA2002E single phase uni-directional

power/energy metering integrated circuit generates a pulse

rate output with a frequency proportional to the power

consumption.

The SA2002E performs a calculation for active power. The

method of calculation takes the power factor into account.

Energy consumption can be determined by the power

measurement being integrated over time.

This innovative universal single-phase power/energy metering

integrated circuit is ideally suited for energy calculations in

applications such as residential municipal metering and factory

energy metering and control.

The SA2002E integrated circuit is available in 8, 14 and 20 pin

dual-in-line plastic (DIP) as well as 16 and 20 pin small outline

(SOIC) package types.

Figure 1: Block diagram

IIP

IIN

IVP

GND

VREF

DR-01586

POWER

TO

FREQUENCY

FOUT

V

DD

V

SS

POWER

INTEGRATOR

ANALOG

SIGNAL

PROCESSING

TIMING

OSC

VOLTAGE

REF.